A method for operating an imaging apparatus includes transmitting and shooting. The imaging apparatus can perform normal shooting or infrared shooting based on adjustment information received from a client device via a network. Information, transmitted to the client, indicates whether adjustment information for performing switching from the normal shooting to the infrared shooting and adjustment information for performing switching from the infrared shooting to the normal shooting can be individually set. A subject's image is shot by performing switching between the normal shooting and the infrared shooting based on the adjustment information received from the client device.